Dublin -- A motorist died yesterday afternoon after he lost control of his car on an Interstate 580 off- ramp, the California Highway Patrol said.

The man, whose identity was not yet confirmed, was driving a 1977 Chevrolet El Camino about 12:35 p.m. when he struck a guardrail and crashed on the off-ramp near Dougherty Road. He was taken to Eden Medical Center in Castro Valley, where he was pronounced dead. The man was in his 30s, according to the Alameda County coroner's office.